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Copyright © 2004 CBTricks.com

Pride DX300

CHAPTER 6

6.4 LOW VOLTAGE PWR SUPPLY:

Ref. #

Description

MFR. Part No.

ASSY. LOW VOLTAGE PWR SUPPLY

01-0300-02

LOW VOLTAGE PWR SUPPLY PCB

82-0300-02

Resistors

Ref. #

Description

MFR. Part No.

R27

Resistor, Carbon Film 470K Ohm 1/2W

06-4704-00

R28

Resistor, Carbon Film 470K Ohm 1/2W

06-4704-00

R29

Resistor, Carbon Film 470K Ohm 1/2W

06-4704-00

R30

Resistor, Carbon Film 470K Ohm 1/2W

06-4704-00

R31

Resistor, Carbon Film 470K Ohm 1/2W

06-4704-00

R32

Resistor, Carbon Film 470K Ohm 1/2W

06-4704-00

R33

Resistor, Carbon Film 470K Ohm 1/2W

06-4704-00

R34

Resistor, Carbon Film 470K Ohm 1/2W

06-4704-00

R35

Resistor, Carbon Film 150 Ohm 1/2W 10%

06-1501-00

R36

Resistor, Carbon 30 Ohm 1/2W 5%

06-0301-00

R37

Resistor, Wire wound 20K Ohm 10W

17-2003-10

R38

Resistor, Wire wound 12K Ohm 10W 10%

17-1203-10

R39

Resistor, Wire wound 10K Ohm 10W 10%

17-1003-10

R40

Resistor, Carbon 3.3K Ohm 2W 5%

06-3302-02

R41

Resistor, Carbon 3.3K Ohm 2W 5%

06-3302-02

R42

Resistor, Carbon Film 680 Ohm 1/2W 5%

06-6801-00

Capacitors

Ref. #

Description

MFR. Part No.

C25

Capacitor, Ceramic Disk 0.001µF 1KV

08-0102-00

C26

Capacitor, Ceramic Disk 0.001µF 1KV

08-0102-00

C27

Capacitor, Ceramic Disk 0.001µF 1KV

08-0102-00

C28

Capacitor, Ceramic Disk 0.001µF 1KV

08-0102-00

C29

Capacitor, Ceramic Disk 0.001µF 1KV

08-0102-00

C30

Capacitor, Ceramic Disk 0.001µF 1KV

08-0102-00

C31

Capacitor, Ceramic Disk 0.001µF 1KV

08-0102-00

C32

Capacitor, Ceramic Disk 0.001µF 1KV

08-0102-00

C33

Capacitor, Electrolytic 40µF 450V

23-0406-45

C34

Capacitor, Electrolytic 40µF 450V

23-0406-45

C36

Capacitor, Electrolytic 1000µF 25V

22-0108-00

C37

Capacitor, Electrolytic 1000µF 25V

22-0108-00

Diodes

Ref. #

Description

MFR. Part No.

D17

Diode, Rectifier 1N4007 1 AMP 1000PIV

48-4007-00

D18

Diode, Rectifier 1N4007 1 AMP 1000PIV

48-4007-00

D19

Diode, Rectifier 1N4007 1 AMP 1000PIV

48-4007-00

D20

Diode, Rectifier 1N4007 1 AMP 1000PIV

48-4007-00

D21

Diode, Rectifier 1N4007 1 AMP 1000PIV

48-4007-00

D22

Diode, Rectifier 1N4007 1 AMP 1000PIV

48-4007-00

D23

Diode, Rectifier 1N4007 1 AMP 1000PIV

48-4007-00

D24

Diode, Rectifier 1N4007 1 AMP 1000PIV

48-4007-00

D25

Diode, Zener 82V 5W 1N5375

48-5375-00

D26

Diode, Rectifier 1N4001 1A 600PIV

48-4001-00

D27

Diode, Rectifier 1N4001 1A 600PIV

48-4001-00

D28

Diode, Rectifier 1N4001 1A 600PIV

48-4001-00

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Содержание Amp Series

Страница 1: ...PRIDE DX 300 Service Manual Amp Series Copyright 2004 CBTricks com Version 1 0...

Страница 2: ...ervicing of high power amplifiers If covers need be removed allow two minutes after turning the unit off and unplugging the line cord before removing covers Disclaimer Although the greatest care has b...

Страница 3: ...justment 12 4 4 Voltage Checks 13 4 5 Preventive Maintenance 13 4 6 Tube Replacement 14 CHAPTER 5 PCB Layouts 5 0 Low Voltage Supply PCB 15 5 1 High Voltage Supply PCB Board 1 16 5 2 High Voltage Supp...

Страница 4: ...ias Circuit Modification Version 2 32 CHAPTER 8 Component Information 8 0 Introduction 33 8 1 Antenna Change Over and Preamp Relay Information 33 8 2 Band Switch 33 8 3 Input Coil Detail 33 8 4 Z1 Det...

Страница 5: ...ction but with care anyone should have not problems with tuning it using the TUNE mode 1 1 SPECIFICATIONS Power Ratings Mode Drive Power SSB 15 watts peak 1000 watts PEP input 650 watts nominal peak o...

Страница 6: ...sed with matched antenna systems better than 1 5 to 1 SWR but will have somewhat higher loss The amplifier will match most loads from 25 to 100ohm 4 Exciter power levels above 12 watts PEP or 5 watts...

Страница 7: ...ndicated on the front panel wattmeter The SCREEN overload indicator may glow at this time and will peak in brilliance at approximately the same place of tuning that maximum output occurs 7 The PLATE L...

Страница 8: ...tting tube has been proven is commercial and military uses where long life and reliability are major factors Although it is designed to work a little harder in amateur service it will still be extreme...

Страница 9: ...ately 10db of gain on the higher frequencies Power supplies 3 1 High Voltage Supply PCB The high voltage supply consists of the plate supply transformer located on the top of the chassis and the two r...

Страница 10: ...50VDC is fed through two power resistors to provide source current for an 82 volt Zener diode D25 that provides a stable bias supply voltage This 82 volt supply is dropped in a voltage divider consist...

Страница 11: ...tching transistor When the amplifier is in the standby mode drive is fed through the relay to the output connector In the operate or tune mode drive is switched to the 9 1 input matching transformer T...

Страница 12: ...hat are in series with the cathode line provide some additional bias during the TUNE mode causing a loss in power gain and making it easy to tune up at lower power These resistors are shorted out by a...

Страница 13: ...rlock PCB Figure 3 5 Safety Interlock Circuit Never turn on the amp with cover off The shorting safety switch will cause the high voltage to short out If this happens it will usually takes out R59 or...

Страница 14: ...of the tube 4 Attempting to operate the unit with top cover removed with the interlock blocked may make the amplifier erratic in tuning and performance due to the high level of R F on the top chassis...

Страница 15: ...r supplies Remove the bottom cover 2 Place a jumper wire or clip lead from point A on the main circuit board to ground Refer to pictorial for specific placement of the jumper Figure 4 1 Jumper A 3 Rep...

Страница 16: ...8 U from the wattmeter board to the input of the dummy load wattmeter 4 Apply power and adjust the exciter for an output of 100 to 200watts as read on the dummy load wattmeter 5 Set the potentiometer...

Страница 17: ...g the B supply 2200 VDC use only a meter which is designed to measure 2kv plus safety during operation at high voltage levels 8 Restore the unit to its original condition 4 5 Preventive Maintenance Th...

Страница 18: ...Edcom Not Good Tubes that will work 4CX250B 4CX250R Have heard of people using a 4CX350B but I haven t tested that 4CX250B 7203 4CX250R 7580W Characteristics Plate Dissipation Max 250 Watts Screen Dis...

Страница 19: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 0 Low Voltage Supply PCB...

Страница 20: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 1 High Voltage Supply PCB Board 1...

Страница 21: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 2 High Voltage Supply PCB Board 2...

Страница 22: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 3 Wattmeter PCB...

Страница 23: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 4 RF Input and Control PCB...

Страница 24: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 5 Safety Interlock PCB...

Страница 25: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 6 PCB Trace Layouts...

Страница 26: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 PCB Trace Layouts Cont...

Страница 27: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 7 Chassis Layouts Front and Rear...

Страница 28: ...32 Copyright 2004 CBTricks com Pride DX300 CHAPTER 5 5 8 Chassis Layouts Top and Bottom...

Страница 29: ...0 02 R26 Resistor Wire wound 25 Ohm 10W 10 17 2500 10 Capacitors Ref Description MFR Part No C14 Capacitor Ceramic Disk 0 001 F 1KV 08 0102 00 C15 Capacitor Ceramic Disk 0 001 F 1KV 08 0102 00 C16 Cap...

Страница 30: ...ramic Disk 0 001 F 1KV 08 0102 00 C8 Capacitor Ceramic Disk 0 001 F 1KV 08 0102 00 C9 Capacitor Ceramic Disk 0 001 F 1KV 08 0102 00 C10 Capacitor Ceramic Disk 0 001 F 1KV 08 0102 00 C11 Capacitor Elec...

Страница 31: ...Part No C25 Capacitor Ceramic Disk 0 001 F 1KV 08 0102 00 C26 Capacitor Ceramic Disk 0 001 F 1KV 08 0102 00 C27 Capacitor Ceramic Disk 0 001 F 1KV 08 0102 00 C28 Capacitor Ceramic Disk 0 001 F 1KV 08...

Страница 32: ...01 00 R54 Resistor Carbon Film 10K Ohm 1 2W 5 06 1003 00 R55 Resistor Carbon Film 270 Ohm 1 2W 5 06 2701 00 R56 Resistor Carbon Film 470 Ohm 1 2W 5 06 4701 00 R57 Resistor Carbon Film 68K Ohm 1 2W 5 0...

Страница 33: ...1 F 1KV 08 0103 02 C45 Capacitor Ceramic Disk 0 01 F 1KV 08 0103 02 C46 Capacitor Ceramic Disk 0 01 F 1KV 08 0103 02 C47 Capacitor Ceramic Disk 0 01 F 1KV 08 0103 02 C48 Capacitor Ceramic Disk 0 01 F...

Страница 34: ...R62 Resistor Carbon Film 100 Ohm 2W R63 Resistor Carbon Film 100 Ohm 2W R64 L9 Choke RF Plate 55 H 24 0014 00 T1 Transformer DX 300 High Voltage 25 0300 01 T2 Transformer DX 300 Low Voltage 25 0300 02...

Страница 35: ...de of the plate choke can stop oscillation of the tube Typically 001 F at 3000Volts 7 4 Wattmeter PCB Modification Nomad Radio Mod On the small circuit board bolted to the rear of the meter the output...

Страница 36: ...ngle 5K 50W resistor off the board to do that job It runs cooler and leaves room for five or six zeners in series on the low voltage power supply PCB With six zeners installed the pot has an end to en...

Страница 37: ...le still keyed the band switch is ruined for good the contacts will burn so badly that the entire switch will have to be replaced The Band switch I haven t found a replacement 8 3 Input Coil Informati...

Страница 38: ...32 Copyright 2004 CBTricks com...

Страница 39: ...he 800 line Fax 888 744 1943 760 744 1943 WESTGATE LABORATORIES L L C 1859 Caravan Trail Suite 106 Jacksonville FL 32216 http www westgateparts com 1 800 213 4563 Local 904 997 2031 Fax 904 997 2041 E...

Страница 40: ...mpletely remove the original two H V circuit boards and install the single piece replacement The Kit has the following components 1 HDHV version 3 printed circuit board 6 180 F 450 Volt radial snap in...

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